153 



THUIDIUM BROTHERI, sp. nov. 



By Ernest B. Salmon, F.L.S. 



(Plate 421.) 



DioicuM?, minutulum, dense csespitosum, bipinnatnm, ramispin- 

 natis remotis 2-5 mill, altis frondes obloiigas minutas simulantibus, 

 cjespitibiis dense iutricatis amcene viridibus fetate nigro-viridibus, 

 caule depresso-prostrato gracili arcuato radiculoso paraphyllis sub- 

 nuUis, foliis caulinis parvulis remotis (caulis apicem versus couferti- 

 oribiis) patentibus apice saepe refiexis e basi cordata amplexante 

 breviter acuminatis vel subtriangnlaribus margine infra revolnto, 

 foliis rameis parvulis e basi latiore ovatis acutis nervo concolori 

 pellucidiore, cellulis parvis distinctis subhexagono-quadratis circiter 

 8 IX latis dense papillosis, paraphyllis nullis vel perpaucis magnis 

 solitariis, foliis ramulinis minutis ovatis vel ovalibus acutis, foliis 

 omnibus siccitate contortulis margine cellulis prominulis et papillis 

 papilloso-crenulatis, nervo sub apice evanido et dorso aspero, peri- 

 chaetio radicaute, foliis perich^tialibus majoribus pallidis tenuiori- 

 bus, externis e medio patentibus vel patulis e basi late ovata longe 

 et anguste acuminatis dentato-serrulatis, nervo crassiusculo fere ad 

 apicem cuspidis fiexuosae denticulatas prodacto, cellulis lasvibus 

 quadrangulis et elongato-quadrangnlis, capsula in pedicello gracili 

 rubello circiter H mill, longo apice scabrello oblonga vel tnrgide 

 oblonga horizontali parvula circiter 1 mill, longa asymmetrica 

 leptoderma laevi fulvella siccitate infra os strangulata sDtate arcuata 

 interdum subapophysata, peristomii dentibus et processibus aequi- 

 longis, externi dentibus siccitate inter processus incnrvis, ciliis 

 2-3 paulo brevioribus e membrana ad vel ultra dentium medium 

 exserta orientibus, anuulo revolubili e una vel duabns cellularium 

 seriebus composito, operculo rostrato, calyptra cucnllata Ifevi, sporis 

 minutis laevibus circiter 12 /x diam. 



Patria. India; Chanda district, Central Prov. (J. F. Duthie, 

 no. 10,047 in Herb. Kew.). 



Species minuta, ramis remotis frondiformibus et paraphyllis 

 nullis vel subnuUis distinguenda ; T. contortuIcR (Mitt.) affinis. 



T. Brotheri quite approaches in habit the species of the section 

 Pelekium of the genus, but differs in its smooth cucuUate calyptra. 

 Dr. V. F. Brotherus, who has worked specially at Indian bryology, 

 remarked on a specimen sent to him : " 1 am in possession of very 

 ample material of Thuidia from India. The species sent by you is 

 not identical with any of the new species I have proposed, and 

 seems undescribed." 



Description of Plate 421. 

 Thuidium Brotheri, sp. nov. — Fig. 1. Portions of plants, nat. size. 2. Part 

 of stem, with branch, x 12. 3, 4. Two stem-leaves, x 150. 5. Leaf from branch, 

 X 150. 6. Areolation of same, at one-third from the base, x 400, 7. Apex of 

 sanae, x 400. 8. Leaf from branchlet, x 1")0. 9. Apex of same, x 400. 10. 

 Perichtetial leaf, x 52. 11. Areolation of same, at one-fourth from the base, 

 X 255. 1'^. Eipe capsule, x 12. 13. Capsule, with operculum, x 25. 14. 

 Operculum, x 25. 15. Calyptra, x 25. 16. Portion of peristome, x 150. 

 17. Cells of the exothecium, x 2o5. 18. Spores, x 400. 



Journal OF Botany. — Vol.39. [May, 1901.] m 



